<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="default" :inline="true" v-show="showSearch" label-width="100px">
      <el-form-item label="任务名称" prop="nodeName">
        <el-input v-model="queryParams.nodeName" placeholder="请输入任务名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <!--      <el-form-item label="流程状态" prop="flowStatus">
        <el-select v-model="queryParams.nodeType" placeholder="请选择流程状态" clearable>
          <el-option v-for="dict in dict?.type?.flow_status" :key="dict.value" :label="dict.label"
            :value="dict.value" />
        </el-select>
      </el-form-item> -->
      <el-form-item label="抄送人" prop="flowName">
        <el-input v-model="queryParams.flowName" placeholder="请输入抄送人" @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="Search" size="default" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" size="default" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-table v-loading="loading" :data="instanceList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" fixed />
      <el-table-column label="序号" width="55" align="center" key="id" prop="id">
        <template #default="scope">
          {{ scope.$index + 1 }}
        </template>
      </el-table-column>
      <el-table-column label="流程实例id" width="100" align="center" prop="id" :show-overflow-tooltip="true" />
      <el-table-column label="流程名称" align="center" prop="flowName" :show-overflow-tooltip="true" />
      <el-table-column label="任务名称" align="center" prop="nodeName" :show-overflow-tooltip="true" />
      <el-table-column label="抄送人" align="center" prop="approver" :show-overflow-tooltip="true" />
      <el-table-column label="流程状态" align="center" prop="flowStatus" :show-overflow-tooltip="true">
        <template #default="scope">
          <dict-tag :options="flowStatus" :value="scope.row.flowStatus" />
        </template>
      </el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime" width="160" :show-overflow-tooltip="true">
        <template #default="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="240" fixed="right" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button size="default" type="text" @click="toFlowImage(scope.row.id)">流程图</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total > 0" :total="total" v-model:page="queryParams.pageNum"
      v-model:limit="queryParams.pageSize" @pagination="getList" />

    <component :is="approve" v-model="businessId" :taskId="taskId" @refresh="getList"></component>

    <el-dialog title="流程图" width="70%" v-model="flowChart" append-to-body>
      <WarmChart :insId="insId"></WarmChart>
    </el-dialog>
  </div>
</template>

<script setup>
  import {
    ref,
    reactive,
    onMounted,
    defineAsyncComponent,
    getCurrentInstance
  } from 'vue'
  import * as api from "@/api/flow/execute";
  import WarmChart from "@/views/flow/definition/warm_chart.vue";
  import {
    useDict
  } from '@/utils/dict'
  import {
    parseTime
  } from '@/utils/ruoyi'

  // 字典数据
  const {
    dict
  } = useDict(['flow_status'])

  // 响应式变量
  const loading = ref(true)
  const insId = ref(null)
  const flowChart = ref(false)
  const ids = ref([])
  const single = ref(true)
  const multiple = ref(true)
  const showSearch = ref(true)
  const total = ref(0)
  const instanceList = ref([])
  const approve = ref(null)
  const taskId = ref("")
  const businessId = ref("")

  // 查询参数
  const queryParams = reactive({
    pageNum: 1,
    pageSize: 10,
    nodeName: null,
    flowStatus: null,
    approver: null,
    flowName: null,
    createTime: null,
  })

  // 获取组件实例（用于操作表单）
  const {
    proxy
  } = getCurrentInstance()

  // 组件挂载时执行
  onMounted(() => {
    getList()
  })

  /** 查询流程实例列表 */
  const getList = () => {
    loading.value = true
    api.copyPage(queryParams)
      .then(response => {
        console.log('notice', response)
        instanceList.value = response.rows
        total.value = Number(response.total)
      })
      .catch(error => {
        console.error('获取流程列表失败:', error)
      })
      .finally(() => {
        loading.value = false
      })
  }

  /** 搜索按钮操作 */
  const handleQuery = () => {
    queryParams.pageNum = 1
    getList()
  }

  /** 重置按钮操作 */
  const resetQuery = () => {
    // 重置表单
    if (proxy?.$refs.queryForm) {
      proxy.$refs.queryForm.resetFields()
    }
    handleQuery()
  }

  // 多选框选中数据处理
  const handleSelectionChange = (selection) => {
    ids.value = selection.map(item => item.id)
    single.value = selection.length !== 1
    multiple.value = !selection.length
  }

  /** 办理按钮操作 */
  const handle = (row) => {
    taskId.value = row.id
    businessId.value = row.businessId
    if (row.formCustom === 'N' && row.formPath) {
      // 动态加载组件（Vue3方式）
      approve.value = defineAsyncComponent(() => import(`@/views/${row.formPath}`))
    }
  }

  /** 查看流程图 */
  const toFlowImage = (instanceId) => {
    insId.value = instanceId
    flowChart.value = true
  }
</script>